Make windowsBuild externally accessible

[russellbanks]

As frameStyle's values are only applicable on Windows 11 and above, it would be helpful to expose the windowsBuild variable so that relevant settings can only be shown to the user if those features are supported for their Windows version.

Currently, in my application, I copy over the relevant code. It would be easier if this was exposed in the library by being made public or exposed through a getter function.

Use case (the options are only shown on >= Windows 11):

[MSDarwish2000]

Thank you for your suggestion. I think adding isSupported to each effect and adding getSupportedEffects() or similar approaches would be better, easier to use, and support other platforms (when added). I'll work on this once I have time for this.